CVE-2026-30926 | SiYuan up to 3.5.9 API Endpoint appendHeadingChildren access control
A vulnerability was found in SiYuan up to 3.5.9. It has been rated as critical. This impacts an unknown function of the file /api/block/appendHeadingChildren of the component API Endpoint. The manipulation leads to improper access controls.
This vulnerability is listed as CVE-2026-30926. The attack may be initiated remotely. There is no available exploit.
Upgrading the affected component is advised.